Patients will receive one of the following treatments for six weeks - 110 mg ketoprofen in Transfersome applied to the skin twice per day plus one placebo capsule administered orally twice per day, 100 mg celecoxib administered orally twice per day plus placebo Transfersome applied to the skin twice per day, Placebo Transfersome applied to the skin twice per day plus one placebo capsule administered orally twice twice per day.